As an expert sommelier and brewer, I can confidently say that screw top wines are indeed very good. The 10-year study conducted by the Australian Wine Research Institute provides strong evidence to support this claim. The study found that wines sealed with screw caps retained the most freshness over time, which is a key factor in determining the quality of a wine.
Traditionally, cork has been the preferred method of sealing wine bottles, as it allows for a small amount of oxygen to interact with the wine, aiding in its aging process. However, corks can also be prone to faults such as cork taint, which can negatively impact the flavor and aroma of the wine. Screw caps, on the other hand, provide a tight seal that virtually eliminates the risk of cork taint and other faults.
Many of the world's best wineries, including those in France, Italy, and America, have recognized the benefits of screw caps and have made the switch to ensure the utmost quality in their wines. This shift is not limited to still wines, as even top sparkling winemakers have adopted screw caps to preserve the freshness and effervescence of their products.
Personal experience has also shown me the positive impact of screw caps on wine quality. I have had the opportunity to taste wines that have been sealed with both corks and screw caps, and in many cases, the screw cap-sealed wines have exhibited a greater vibrancy and freshness. The absence of cork taint or other faults allows the true characteristics of the wine to shine through, making for a more enjoyable drinking experience.
Furthermore, screw caps offer practical advantages as well. They are easier to open and reseal, eliminating the need for a corkscrew and the risk of crumbling or breaking a cork. This convenience is particularly appreciated when serving wine in outdoor settings or during picnics and other casual occasions.
Screw top wines are definitely good and should not be dismissed based on any preconceived notions or preferences for traditional cork closures. The evidence from the Australian Wine Research Institute study, as well as the support from top wineries and personal experiences, strongly support the use of screw caps as a reliable and effective sealing method for preserving the freshness and quality of wines.